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285 results about "Continuous flow" patented technology

Continuous-flow manufacturing, or Repetitive-Flow Manufacturing, is an approach to discrete manufacturing that contrasts with batch production. It is associated with a just-in-time and kanban production approach, and calls for an ongoing examination and improvement efforts which ultimately requires integration of all elements of the production system. The goal is an optimally balanced production line with little waste, the lowest possible cost, on-time and defect-free production.

Continuous annealing equipment and annealing process for round steel bar annealing

The invention discloses continuous annealing equipment and an annealing process for round steel bar annealing, and relates to the technical field of metal heat treatment equipment and processes, the continuous annealing equipment comprises an annealing furnace barrel, an annealing box heating pipe and a base, one side face of the annealing furnace barrel is fixedly communicated with an annealing box, and a public self-driving assembly is arranged in the annealing box. The rotary cylinder and the supporting disc are driven through the public self-driving assembly, the round steel bars are kept to rotate synchronously before and after entering the annealing box, continuous circulation and rotary annealing are achieved, compared with traditional stacking annealing, the round steel bars on the inner side of a material pile can also fully absorb heat, and therefore the problems that temperature distribution is uneven, and temperature rise of part of the steel bars is too slow are solved; therefore, the uniform annealing effect of each round steel bar is guaranteed, the internal structure uniformity, the hardness stability and the subsequent machining performance of the product are remarkably improved, and the machining safety and reliability of the material are improved.
Owner:TAIZHOU DONGTE STEEL TECH CO LTD

A heavy metal material separation device for renewable resources

The utility model discloses a kind of heavy metal material separation devices of renewable resources, including separation tank, the inside rotation of separation tank is equipped with two rotating rods C, the outer surface of two rotating rods C is commonly transmission installation and has conveyor belt C;The utility model is rotated by motor C and conveyor belt C rotation, to transport the material after crushing, this step ensures the continuous flow of material in the processing process, creates conditions for subsequent chemical treatment, by pump body and input pipeline extraction separation tank bottom reagent, by output pipeline and spray head respectively to magnetic material and non-magnetic material are sprayed, this step makes the heavy metal on the surface of material and reagent react, to realize the separation of heavy metal, can effectively separate and recover heavy metal material, reduce the pollution of heavy metal to environment, not only help to protect environment, but also recycle valuable heavy metal resources, promote the recycling of resources.
Owner:HEBEI HONGLEI RENEWABLE RESOURCES RECYCLING CO LTD

1-nitroanthraquinone continuous production process based on dynamic liquid membrane continuous flow reactor

The invention relates to the field of chemical equipment, in particular to a 1-nitroanthraquinone continuous production process based on a dynamic liquid membrane continuous flow reactor, which comprises a solid feeding device, a homogeneous emulsifier, a quenching kettle, a solid-liquid separator, a centrifugal separator and a dynamic liquid membrane reactor, a sulfuric acid storage tank is divided into two branches through a sulfuric acid feeding pump, one branch is connected to the dynamic liquid membrane reactor, the other branch is connected to the dynamic liquid membrane reactor through a flow self-control valve, the quenching kettle is connected to a solid-liquid separator, the solid-liquid separator is divided into two branches, one branch is connected to an anthraquinone crude product storage tank, the other branch is connected to a centrifugal separator, and the other branch is connected to a gas-liquid separator. The centrifugal separator is divided into two branches, one branch is connected to the acid water storage tank, and the other branch is connected to the dichloroethane storage tank, so that the reaction selectivity of the anthraquinone nitration reaction can be effectively improved, high-viscosity solids are prevented from being blocked, and the conversion rate of raw materials in the continuous reaction of the anthraquinone nitration reaction is improved.
Owner:QINGDAO TIANHUICHEN TECH CO LTD +1

Bagged seasoning filling device and method

The invention is suitable for the technical field of seasoning filling, and provides a bagged seasoning filling device and method.The bagged seasoning filling device comprises a filling device body, an auxiliary discharging mechanism is arranged at the top of the filling device body, and a drying mechanism is arranged in the middle of the filling device body; according to the bagged seasoning filling device, the auxiliary discharging mechanism is arranged at the top of the filling device body, and a linkage structure of a first gear, a second gear, a transmission rod and a stirring rod is utilized, so that a stirring piece continuously turns over seasonings in a storage box and a discharging box, and therefore caking structures formed in the seasonings are effectively damaged before filling; the seasoning feeding device is simple in structure and convenient to operate, avoids bridging, blocking and other phenomena caused by long-term standing or wetting of seasoning, achieves controllable adjustment of the feeding action in cooperation with transmission conversion of an electric push rod, a rack and a third gear, enables the seasoning to be kept in a stable and continuous flowing state in the feeding process, improves the feeding uniformity and reliability, and reduces the manual intervention frequency.
Owner:LITTLE BEAR DRIVE TO CO LTD

Method for preparing nitro-mesitylene through micro-channel nitration reaction

The invention discloses a method for preparing nitro-mesitylene through a micro-channel nitration reaction. The method comprises the following steps: respectively conveying mesitylene, fuming nitric acid and sulfuric acid to a micro-channel reaction module through a metering pump, and completing nitration reaction within a retention time of tens of seconds to several minutes. The introduction sequence of nitration reaction materials, the reaction retention time and the reaction temperature are cooperatively controlled, the nitration reaction is completed in the microchannel reactor in a continuous flow mode, operation is easy and convenient, safety is high, efficient continuous production can be achieved, meanwhile, emission of three wastes is reduced, and the industrial application advantages of being environmentally friendly and economical are achieved.
Owner:NANJING UNIV OF SCI & TECH

A multifunctional continuous flow heterogeneous or homogeneous catalytic tandem reaction device

The application provides a multifunctional continuous flow heterogeneous or homogeneous catalytic series reaction device, which comprises a raw material gas supply pipeline, a first gas purification device, a first constant-temperature bubbling gas redispersion device, a second constant-temperature bubbling gas redispersion device, a light-concentrating photothermal reactor, a second gas purification device, a reaction gas velocity cooling device, a gas-liquid separation device and a gas collection device which are sequentially connected in pipeline along the fluid flow direction, and a fluid directional control system. Through the composite heat-resistant cavity structure and the light-heat-flow collaborative design, the device realizes the tolerance to extreme heat environment and the elimination of local hot spots, and the service life is improved by more than 3 times; through the three-stage purification process and the multi-parameter independent control system (temperature / pressure / flow rate / light intensity), the stability of the oxygen-sensitive reaction is ensured, and the reaction selectivity is more than 95%. The device solves the engineering scale-up problem in the light-concentrating catalysis field, the mass transfer efficiency is improved by 5-8 times compared with the batch system, and provides an expandable technical platform for the continuous production of solar fuels.
Owner:SOUTHEAST UNIV

Precast beam bottom web steel reinforcement framework machining production line and machining method

The invention provides a prefabricated beam bottom web steel reinforcement framework machining production line and a machining method, and relates to the technical field of steel reinforcement framework machining. A rail component connected with a bottom rib welding area and a side rib welding area is arranged, a movable platform is arranged on the rail component, and the movable platform bears bottom web single pieces and bottom ribs and automatically conveys the bottom web single pieces and the bottom ribs along a rail; the continuous circulation of the bottom rib and side rib welding procedure is realized; when the bottom ribs are welded, the bottom ribs can be firstly placed on the moving platform, the moving platform is moved to the bottom rib welding area, the bottom web single pieces are arranged on the bottom ribs one by one for welding of the bottom ribs and the bottom web single pieces, after welding is completed, the moving platform is moved to the side rib welding area along the track, and in the side rib welding area, the side ribs are arranged on the two corresponding sides of the bottom web single pieces. Continuous welding of the side ribs on the two sides and the bottom web single piece is completed; through cooperative control of partition welding, track conveying and automatic welding equipment, procedure interference is effectively avoided, the welding precision is improved, the welding period is shortened, and the automatic machining efficiency is improved.
Owner:CHINA TIESIJU CIVIL ENGINEERING GROUP CO LTD +3

Continuous flow plate type microchannel reactor

The utility model discloses a continuous flow plate type micro-channel reactor, which relates to the technical field of micro-channel reactors, and comprises a micro-channel reactor consisting of a front cover plate, a microporous reaction plate and a rear cover plate, and a quick assembly component, and the quick assembly component is used for realizing the convenient assembly of the front cover plate, the microporous reaction plate and the rear cover plate; the quick-mounting assembly comprises a quick-connecting unit and a reinforcing unit; the quick connection unit is used for achieving mutual limiting and fixing of the rear cover plate and the front cover plate. And the reinforcing unit is used for locking and reinforcing the fixing state of the quick connecting unit. According to the utility model, the micro-channel reactor can be disassembled and assembled by arranging the quick assembly component, a bolt fastening structure of the existing micro-channel reactor is replaced by a clamping structure consisting of the butt-joint column, the C-shaped clamping groove and the rectangular plate, and compared with the traditional bolt fastening structure, the locking structure of the reinforcing plate by the stud and the nut has the advantages that the structure is simple and convenient; the screwing and unscrewing actions of the nut are obviously reduced, and the disassembly and assembly efficiency of the micro-channel reactor can be effectively improved.
Owner:SHANDONG XINHONGYUAN ENGINEERING TECHNOLOGY CO LTD

Powder adsorbent processing system

The utility model relates to the technical field of powder adsorbent processing, and discloses a powder adsorbent processing system which comprises a feeding module for processing a powder adsorbent, a glue supply module and a drying module, the feeding module is used for conveying powder raw materials; the glue supply module is used for conveying glue into the material supply module; the drying module is used for drying and curing the mixed and extruded materials; by using the vibrator, caking or bridging of powder in the stock bin is effectively prevented, smooth outflow and uniform mixing of the powder are ensured, continuous flowing and drying of the material are ensured by continuous operation of the belt conveyor and the belt dryer, interruption and waiting time in the production process are avoided, and the production efficiency is improved. The hot air provided by the hot air furnace can comprehensively and efficiently dry materials in the belt dryer, the problems of caking, mildewing and the like caused by water residues are prevented, the product strength and stability are enhanced, and the performance and quality of an adsorbent are improved.
Owner:GUIZHOU XINCHUAN ENERGY SAVING & ENVIRONMENTAL PROTECTION CO LTD

Sodium hydrosulfite synthesis control method and system and electronic equipment

The invention discloses a control method and system for sodium hydrosulfite synthesis and electronic equipment, and the control method comprises the following steps: a production starting instruction is obtained, and the production starting instruction comprises control configuration of a pretreatment stage, a feeding stage, an absorption liquid stage, a heat preservation stage, a large charging stage, a small charging stage, a cold charging stage and a discharging stage. By acquiring the production starting instruction and controlling the operation of each stage according to the preset configuration, the automation of the production process is realized, human errors are reduced, and the strict requirement on highly concentrated spirit of operators is lowered. Operating parameters of each stage can be accurately controlled according to a preset program, and product quality fluctuation caused by unstable operation in a traditional process is avoided. The operation parameters and the feeding sequence of each stage are automatically executed according to the preset configuration, the whole process is provided with safety alarm and termination and abnormity handling programs, the reaction process is continuous, smooth and safe, shutdown waiting or human errors are avoided, and the overall production efficiency and safety are improved.
Owner:GUANGDI MAOMING CHEM CO LTD

Method for preparing carbon nanotube-based composite microsphere energy storage material through continuous flow

The invention discloses a method for preparing a carbon nanotube-based composite microsphere energy storage material through continuous flow. The invention discloses a preparation method for constructing a microspherical composite carbon nanotube supercapacitor material based on microfluidics, and belongs to the technical field of supercapacitors. The method comprises the following steps: acidifying carbon nanotubes to improve dispersibility; the preparation method comprises the following steps: by taking dimethyl silicone oil as an oil phase and acidified carbon nanotube dispersion liquid as a water phase, regulating and controlling a flow rate ratio through a microfluidic technology, and preparing carbon nanotube microspheres with uniform sizes; performing high-temperature pyrolysis to obtain a conductive microsphere framework; the MF-CNTs (at) ZIF-8 composite material is obtained by taking the MF-CNTs (at) ZIF-8 as a carrier, performing in-situ growth of ZIF-8 through a solution impregnation method and then performing secondary pyrolysis. According to the method, accurate and controllable preparation of the carbon nanotube microspheres is realized, and a conductive network of the carbon nanotubes and high specific surface area and pseudocapacitance activity of the ZIF-8 are synergistically exerted by combining in-situ compounding of the ZIF-8. The specific capacitance of the prepared material in a 6 M KOH electrolyte reaches 356.2 F.g <-1 >, the rate capability is excellent, and the capacity retention rate is 81.6% after 3000 cycles. The method has the advantages of controllable steps, mild conditions, low cost, easiness in continuous production and large-scale application potential.
Owner:FUZHOU UNIV

Continuous-flow microfluidic homogenization device

Disclosed is a continuous-flow microfluidic homogenization device, which includes a supporting component, wherein a disperser and an aligning component are fixedly mounted at a front end of the supporting component, the aligning component is positioned at a front end of the disperser, a conveying pipeline is fixedly mounted at a top end of the disperser, the supporting component includes synchronizing apparatuses and a transmission apparatus, the synchronizing apparatuses are symmetrically and fixedly mounted at a top front end of the transmission apparatus, the transmission apparatus includes a microfluidic homogenization device body, first racks, a placing base, a receiving measuring cup, an extending base frame, a butt joint head, a fourth gear, a second rack and hydraulic cylinders, the hydraulic cylinders are symmetrically and fixedly mounted at a top end of the microfluidic homogenization device body, and the placing base is fixedly mounted at a front end of the hydraulic cylinder.
Owner:WENZHOU UNIV OF TECH

Water-cooled furnace roller for thin slab continuous casting continuous rolling roller bottom type furnace

The utility model provides a thin slab continuous casting continuous rolling roller bottom type furnace water cooling furnace roller which comprises a roller body, a water cooling layer and a limiting head, the inner side of the roller body is provided with a group of water cooling layers used for keeping continuous cooling of the roller body, and each water cooling layer comprises a layer body, an inner flow guide groove, an exchange port and a temperature guide wall. A plurality of groups of inner flow guide grooves used for cooling the roller body are formed in the layer body, each inner flow guide groove is of an annular structure, and a plurality of groups of cooling plates used for exchanging the temperature of cooling liquid are arranged in each inner flow guide groove. Compared with the prior art, the cooling device has the advantages that cooling liquid enters the multiple sets of inner flow guide grooves through the water inlet and outlet pipe, continuously flows along with rolling of the roller body in the cooling groove, and makes contact with the multiple sets of cooling plates in the cooling groove while continuously flowing, so that the contact area with the cooling liquid is increased, and the cooling effect is improved. And the cooling efficiency of the cooling liquid is improved, and meanwhile, continuous cooling of the roller body in the continuous casting and rolling process of the sheet billet is kept.
Owner:QINGDAO YUANDING GROUP

Engineering continuous preparation method of 3-amino-4-amidoxime furazan

The invention discloses an engineering continuous preparation method of 3-amino-4-amidoxime furazan, which is characterized in that engineering synthesis of 3-amino-4-amidoxime furazan is technically verified and optimized by adopting a continuous flow micro-channel reactor and a dynamic tubular reactor technology, and malononitrile is used as a starting raw material to react in the micro-channel reactor; the preparation method comprises the following steps: carrying out nitrosation and oximation to obtain a trioxime solution, conveying trioxime and a cyclization solution to a dynamic tubular reactor, heating to a certain temperature, reacting and curing, overflowing into a collection tank through the tubular reactor, adjusting the pH value of a reaction solution, cooling, filtering, washing with water, and drying to obtain the 3-amino-4-amidoxime furazan. The AAOF engineering manufacturing process scheme is provided, AAOF kilogram-level engineering preparation under automatic control is achieved, the problems of material precipitation, heat exchange and the like in an intermittent production mode are solved, and the synthesis efficiency and the synthesis safety are greatly improved.
Owner:XIAN MODERN CHEM RES INST

Continuous flow preparation system of graphene composite membrane

The invention relates to the technical field of membrane preparation, and discloses a continuous flow preparation system of a graphene composite membrane, the system comprises a base material pretreatment module, a multi-component layered compounding module, an in-situ synergistic crosslinking module, an online detection and feedback regulation and control module and a reel-to-reel winding and unwinding module which are sequentially connected in series; the multi-component layered composite module realizes uniform mixing and layered coating of graphene and functional components through a coaxial runner dispersion unit, and an ultrasonic oscillation assembly inhibits graphene agglomeration; the in-situ synergistic cross-linking module adopts plasma-ultraviolet series treatment to strengthen film interface bonding; the online detection and feedback regulation and control module is linked with the central controller through spectrum detection and thickness detection to realize real-time optimization of preparation parameters; and the reel-to-reel winding and unwinding module ensures the transmission stability of the base material. According to the invention, full-process continuous production of the graphene composite membrane is realized, the preparation efficiency, the membrane layer uniformity and the mechanical stability are improved, and the method is compatible with multi-component functional compounding and is suitable for membrane preparation in the fields of water treatment, energy storage and the like.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

Metallurgy informatization production line operation and maintenance management system based on dynamic knowledge graph

The invention discloses a metallurgical informatization production line operation and maintenance management system based on a dynamic knowledge graph, which belongs to the technical field of metallurgical production operation and maintenance management and specifically comprises a management cloud platform, a metallurgical sequencing processing unit, a quality evaluation unit and a quality prediction optimization unit. The invention aims to solve the problems of hysteresis and process isolation in the traditional metallurgical production line quality control, and the core lies in constructing a full-process dynamic knowledge graph serving the metallurgical production line, and creating a'quality evaluation model 'and a'quality prediction model' based on the knowledge graph, thereby forming a'dual-stage and cross-process' continuous process intelligent quality control system. According to the method, pre-prediction waste prevention is realized based on pre-production parameter virtual verification optimization, post-production compensation is realized based on cross-process quality prediction optimization adjustment, and accurate perception, causal reasoning and collaborative decision-making of whole-process quality are realized through a dynamic knowledge graph.
Owner:BENGANG STEEL PLATES CO LTD

A method for synthesizing catalase nanocapsules based on gas-liquid two-phase flow microfluidic technology and application

The application discloses a method for synthesizing catalase nanocapsules based on gas-liquid two-phase flow microfluidic technology and application. Nitrogen is used as a gas phase, and a liquid phase containing acrylated catalase, a monomer mixture and a crosslinking agent is used to form Taylor flow in a microfluidic chip. The internal vortex of the gas-liquid interface is used to enhance the mixing efficiency, and in-situ radical polymerization on the surface of the enzyme is realized. By screening six microfluidic chips with different structures, the geometric parameters of the chip and the hydrodynamic conditions are optimized, and the particle size uniformity and enzyme activity retention rate of the nanocapsules are significantly improved. The application also discloses a continuous flow reactor system for loading the obtained nanocapsules on macroporous resin microspheres to construct a continuous flow reactor system, and the system is used for efficient degradation of hydrogen peroxide in semiconductor wastewater. The method has the advantages of high mixing efficiency, mild reaction conditions, continuous production and the like, the obtained nanocapsules have the advantages of narrow particle size distribution, high enzyme activity and good stability, and are suitable for the field of industrial wastewater treatment.
Owner:FUZHOU UNIV

Continuous flow synthesis method of allicin E

The invention relates to the field of compound synthesis, in particular to a method for continuously synthesizing allicin E by using a continuous flow reactor, solves the problems of long reaction time, substandard purity, high safety risk and the like of the existing allicin E, and has the advantages of low production cost, simplicity in operation, environmental friendliness, simplicity in post-treatment and facilitation of industrial production.
Owner:SUZHOU CHIYUAN BIOTECHNOLOGY CO LTD +1

Bamboo cellulose preparation raw material inventory management system based on block chain

The invention discloses a bamboo cellulose preparation raw material inventory management system based on a block chain, particularly relates to the field of chain inventory management, and is used for solving the problems of quality attenuation, cross-warehouse allocation and low transaction triggering intelligence degree of traditional bamboo cellulose raw materials in a storage cycle. The method comprises the following steps: constructing a raw material digital fingerprint by collecting core physical characteristics and batch information of a bamboo cellulose raw material; predicting the quality change of the next transaction time window based on the quality dynamic attenuation model in combination with the storage environment parameters, and exposing the risk in advance; when the attenuation amplitude exceeds a threshold value, automatically entering on-chain auction, and electing a transaction object according to anonymous bidding and reputation weight; and for the inventory of the continuous flow beat, calculating an allocation priority index through a global inventory map and automatically executing cross-warehouse allocation. According to the mechanism, credible recording, dynamic early warning and automatic decision making of the whole inventory management process are achieved, and the raw material circulation efficiency and the quality management capability under multi-warehouse cooperation are improved.
Owner:武夷学院

Novel stirrer for toner cartridge

The utility model discloses a novel stirrer for a carbon powder box, which comprises a stirring shaft and an elastic blade fixed on the stirring shaft, a plurality of gaps are arranged along the edge of the elastic blade, and the elastic blade is divided into continuously arranged scrapers. The elastic blade is divided into a pushing section and a flow guide section in the length direction of the elastic blade, the top end of a scraping piece of the pushing section is designed to be flat, the top end of a scraping piece of the flow guide section is designed to be bevel, and flow guide holes are formed in the edges of the gaps of the flow guide section. The utility model aims to provide the carbon powder feeding device which is divided into the pushing section with the flat-edge scraping piece and the flow guide section with the bevel-edge scraping piece through the elastic blade, and when the powder level is low, the flat-edge scraping piece of the pushing section is tightly attached to the bin wall, so that the carbon powder is ensured to continuously enter the conveying bin, and the interruption of powder supply is avoided; and when the powder level is high, the bevel edge scraping pieces and the flow guide holes act synergistically, so that the rotating resistance of the blades is reduced, the carbon powder is guided to flow smoothly, and the powder supply uniformity and the printing quality stability are remarkably improved.
Owner:ZHONGSHAN XIAOMAN TECHNOLOGY DEVELOPMENT CO LTD

Industrial wastewater solid-liquid separation and continuous circulation device with automatic desorption function

The invention relates to an automatic-desorption industrial wastewater solid-liquid separation and continuous circulation device, and discloses a device for realizing automatic cleaning of residual solid wastes on grabbing teeth by driving an arc-shaped cleaning scraper to reciprocate through an electric push rod. The device is characterized in that the device is composed of a conveying unit and a separation self-cleaning unit, the conveying unit is composed of a main conveying shell, a connecting shell, a sewage inlet, a supporting plate, a fixing plate, a waste collecting box, an avoiding groove and a water filtering hole, and the two ends of the connecting shell are correspondingly connected to one end of the main conveying shell; a sewage inlet is formed in the middle of the other end of the main conveying shell, a water filtering hole is formed in the bottom of the main conveying shell, a receding groove is longitudinally formed in one end of the bottom face of the main conveying shell, one end of a fixing plate is arranged on the bottom face of the main conveying shell, and the other end of the fixing plate is correspondingly connected with the two sides of the waste collecting box. One side of the supporting plate is arranged on one side of the fixing plate.
Owner:JIANGSU HONGJI GEOTECHNICAL ENG CO LTD

A PCBA test tool capable of rapid changeover

The application discloses a PCBA test tool capable of rapid change type, which comprises a lower computer, a tool frame and a needle bed module. The lower computer is internally provided with an intelligent plug-in, a backboard and a female connector of the needle bed module connector; the tool frame is provided with a needle bed module tray and a sliding guide rail; and the needle bed module is provided with a test probe, a bottom plate PCB and a male connector of the needle bed module connector. The lower computer is installed in the tool frame, the needle bed module is placed in the needle bed module tray, and the female connector of the needle bed module connector is connected with the male connector of the needle bed module connector. During testing, the PCBA to be tested is in contact with the needle bed module and is pressed tightly, and the test probe is in contact with the test point of the PCBA to be tested. The application is not connected with any cable or flying wire between the needle bed module and the lower computer, can realize drawer type plugging and unplugging, is convenient to change type and reliable in connection, and the lower computer is provided with a test signal switching matrix module, and is suitable for the differentiated needs of different PCBAs to be tested to test signal sources. The test tool can be applied to a PCBA production flow line, and realizes continuous flow of PCBA welding and testing links.
Owner:NARI TECH CO LTD

System and method for continuously preparing biurea

The invention relates to the technical field of biurea preparation, in particular to a system and a method for continuously preparing biurea. According to the method, acetone, liquid ammonia, chlorine and urea are used as raw materials, a continuous flow reactor with a micro-channel reactor and a tubular reactor is used, biurea is generated by adopting an acetone azine process route, and the byproduct acetone and ammonia are directly recycled after being condensed and absorbed, so that the consumption cost of the raw materials is greatly reduced, the resource utilization rate is increased, and the method has outstanding economic benefits. According to the method, the high-risk ketazine synthesis reaction is limited in a channel with extremely small liquid holdup to be safely carried out at low temperature, the explosion risk caused by accumulation of nitrogen-containing intermediates is greatly reduced, inorganic acid and alkali metal salt are not introduced into the whole process, the process is green and environment-friendly, high-salinity wastewater is completely eradicated from the reaction principle, the most important pollution source is eliminated from the source, and the production cost is reduced. And the environmental protection advantage is extremely remarkable, and the most severe environmental protection difficulty of the traditional process is solved. And the process is green, environment-friendly, low in energy consumption and suitable for large-scale and automatic production.
Owner:FUJIAN LISHAN HEGUANG ENGINEERING TECHNOLOGY RESEARCH CO LTD +1

Continuous preparation method of pentaerythritol bisulfite

The invention relates to a continuous preparation method of pentaerythritol bisulfite, which comprises the following steps: respectively and continuously introducing pentaerythritol emulsion and thionyl chloride into a continuous flow oscillation stirring reactor for continuous flow reaction, controlling the reaction temperature to be 40-90 DEG C, controlling the temperature to be 40-90 DEG C, and controlling the reaction time to be 1-3 hours; the stirring rotating speed is 200 to 800 r / min, the reaction pressure is 0.3 to 0.8 MPa, and the reaction time is 30 to 120 minutes. By using the continuous flow oscillation stirring reactor and specific reaction conditions, the continuous preparation is realized, and the pentaerythritol conversion rate, the product yield and purity, the reaction efficiency and the post-treatment simplicity are considered at the same time. The method has the remarkable advantages of simple process, low reaction operation difficulty, high reaction efficiency and the like, and can meet the comprehensive requirements of large-scale continuous industrial production on efficiency, cost and product quality.
Owner:SHANGHAI CHAOWEI TECHNOLOGY CO LTD

Preparation device of positive electrode core-shell structure precursor

The utility model discloses a preparation device of a positive electrode core-shell structure precursor, and relates to the technical field of lithium batteries, a plurality of stirring devices arranged at intervals along the length direction of a horizontal reaction kettle are inserted in each stage of horizontal reaction kettle, so that shear force and turbulent flow generated by stirring can be transmitted to the whole reaction liquid, and sufficient mixing and uniformity of the reaction liquid are ensured. Compared with a vertical reaction kettle, the horizontal reaction kettle is relatively low in height and is easier to transversely arrange and expand, the limitation that the stirring efficiency of the vertical reaction kettle is reduced due to volume increase is broken through, and large-scale production is favorably realized. The multiple stages of horizontal reaction kettles are sequentially connected in series, so that the reaction process is continuously carried out, and the overall production efficiency and yield are improved. The layout and stirring of the plurality of stirring devices are matched with the continuous flow of the reaction liquid among the multi-stage reaction kettles, so that solid particles are always kept in a suspended state and are prevented from settling to the bottom, particle dispersion is not required to be maintained by depending on too high stirring speed and frequent stirring like a vertical reaction kettle, and the energy consumption is reduced.
Owner:SUZHOU AMIT MATERIAL TECHNOLOGY CO LTD

Material screening and intercepting device

The application relates to the technical field of material screening, in particular to a material screening and intercepting device, a screen is connected to a first main pipeline and arranged along a cross section, an outer wall of the first main pipeline is provided with a mounting seat for mounting a vibrator; a first connecting pipeline is connected to an axial upper end of the first main pipeline, a second connecting pipeline is connected to an axial lower end of the first main pipeline, and the first and second connecting pipelines are all axially telescopic; two ends of an elastic connecting piece are connected to two ends of the first connecting pipeline correspondingly. The material screening and intercepting device can be connected to a material conveying pipeline of a production device, the screen can screen and filter continuously flowing powder raw materials under the action of a vibrating force, and can intercept impurities possibly generated in the operation process of the production device; the first and second connecting pipelines are both axially telescopic, the vibrating force is effectively isolated from being conducted to upstream and downstream devices, the elastic connecting piece plays a bearing and vibration isolation role, and the installation of the material screening and intercepting device is reliable.
Owner:CHENGDU B & M SCIENCE & TECHNOLOGY CO LTD

Continuous flow tubular reactor for preparing carborane

ActiveCN224086758UEffectively deal with damagefirmly connectedProductsReagentsThermodynamicsProcess engineering
The utility model relates to the technical field of carborane preparation, in particular to a continuous flow tubular reactor for preparing carborane. Comprising a gasification structure and a feeding mechanism, the gasification structure comprises a gasification reaction pipe communicated with the feeding mechanism in a sealed mode, the gasification structure comprises a filler box body, a preheating box body and a high-temperature reaction box body which are sequentially arranged, one end of the gasification reaction pipe is located in the filler box body, and the other end of the gasification reaction pipe sequentially penetrates through the preheating box body and the high-temperature reaction box body; the feeding mechanism is arranged above the filler box body, and a discharging pipe of the feeding mechanism extends into the filler box body and is in sealed connection with the gasification reaction pipe; the filler box body is slidably arranged on the base table, a mounting plate for supporting the feeding mechanism is slidably arranged at one end of the base table, and when the gasification reaction tube is subjected to axial deformation due to thermal expansion and cold contraction, the filler box body and the feeding mechanism can synchronously move left and right. The structure can effectively cope with the axial deformation of the gasification reaction tube during expansion caused by heat and contraction caused by cold, and improves the adaptability and reliability of the whole structure.
Owner:ZHENGZHOU SIGMA CHEM

Continuous flow production system for pesticide intermediate synthesis

ActiveCN121988255Aprecise positioningSolve the consensus technical problem of incomplete transformationChemical/physical/physico-chemical processesFeed devicesControl engineeringProcess engineering
The present invention relates to the technical field of chemical process control, and discloses a pesticide intermediate synthesis continuous flow production system, which comprises: a pulsating flow supply module for conveying a reaction material flow with a specific pulsating frequency to a main reaction bearing module; the distribution state sensing module is used for collecting temperature response data of the material flow to the flow pulsation; the discrete impedance compensation module consists of a plurality of groups of impedance adjustment subunits with different path lengths; and the central balance control module locks the position of the reaction active area based on the temperature response data and drives the discrete impedance compensation module to switch the topological structure when the position deviates. The physical residence time of a discrete path compensation network step type adjusting system is utilized, and the technical problem that a reaction kinetics window is mismatched with the length of a fixed physical flow channel in the continuous flow process is solved.
Owner:HUNAN HAOHUA CHEM